Title
|
|
|
|
Enhancement of second harmonic generation signal in thermally poled glass ceramic with nanocrystals
| |
Author
|
|
|
|
| |
Abstract
|
|
|
|
Glass ceramic composites were prepared by bulk crystallization of NaNbO3 in sodium niobium borate glasses. A homogeneous bulk crystallization of the NaNbO3 phase takes place during heat treatments that produces visible-near infrared transparent materials with similar to 30 nm NaNbO3 nanocrystallites. Upon thermal poling, a strong Na+ depleted nonlinear optical thin layer is observed at the anode side that should induce a large internal static electric field. In addition, the chi((2)) response of the poled glass ceramic composites increases from 0.2 up to 1.9 pm/V with the rate of crystallization. Two mechanisms may be considered: a pure structural chi((2)) process connected with the occurrence of a spontaneous ferroelectric polarization or an increase of the chi((3)) response of the nanocrystallites that enhances the electric field induced second harmonic generation process. (c) 2006 American Institute of Physics. |
| |
Language
|
|
|
|
English
| |
Source (journal)
|
|
|
|
Journal of applied physics / American Institute of Physics. - New York, N.Y., 1937, currens
| |
Publication
|
|
|
|
New York, N.Y.
:
American Institute of Physics
,
2006
| |
ISSN
|
|
|
|
0021-8979
[print]
1089-7550
[online]
| |
DOI
|
|
|
|
10.1063/1.2259816
| |
Volume/pages
|
|
|
|
100
:6
(2006)
, 5 p.
| |
Article Reference
|
|
|
|
063103
| |
ISI
|
|
|
|
000240876600003
| |
Medium
|
|
|
|
E-only publicatie
| |
Full text (Publisher's DOI)
|
|
|
|
| |
|